US 12,003,107 B2Granted

Method and apparatus for storing and depleting energy

AssigneeSolaredge Technologies Ltd.

InventorMeir Gazit

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Abstract

A method to control storage into and depletion from multiple energy storage devices. The method enables an operative connection between the energy storage devices and respective power converters. The energy storage devices are connectible across respective first terminals of the power converters. At the second terminals of the power converter, a common reference is set which may be a current reference or a voltage reference. An energy storage fraction is determined respectively for the energy storage devices. A voltage conversion ratio is maintained individually based on the energy storage fraction. The energy storage devices are stored individually with multiple variable rates of energy storage through the first terminals. The energy storage is complete for the energy storage devices substantially at a common end time responsive to the common reference.

Claims27

Dependent claims

A method comprising:

transferring, using a plurality of power converters in a first mode and a second mode, power between a plurality of energy storage devices and an electrical network, wherein each power converter of the plurality of power converters is respectively coupled to an energy storage device of the plurality of energy storage devices, and output terminals of the plurality of the power converters are coupled to form a series string;
wherein the transferring in the first mode comprises:
each power converter, of the plurality of power converters, discharging its respectively coupled energy storage device based on a state of charge of its respectively coupled energy storage device relative to a state of charge of another energy storage device of the plurality of energy storage devices;
wherein the transferring in the second mode comprises:
each power converter, of the plurality of power converters, charging its respectively coupled energy storage device based on the state of charge of its respectively coupled energy storage device relative to the state of charge of the another energy storage device;
and
wherein the transferring in the first mode further comprises:
each power converter, of the plurality of power converters, maintaining a voltage conversion ratio based on a battery charge fraction of its respectively coupled energy storage device.

5 more elements

A system comprising:

a plurality of energy storage devices;
and
a plurality of power converters, wherein output terminals of the plurality of the power converters are coupled to form a series string, and wherein each power converter, of the plurality of power converters, is:
respectively coupled to an energy storage device of the plurality of energy storage devices;
configured, in a first mode, to discharge power from its respectively coupled energy storage device based on a state of charge of its respectively coupled energy storage device relative to a state of charge of another energy storage device of the plurality of energy storage devices;
configured, in a second mode, to charge its respectively coupled energy storage device based on the state of charge of its respectively coupled energy storage device relative to the state of charge of the another energy storage device;
and
configured to maintain a voltage conversion ratio based on a battery charge fraction of its respectively coupled energy storage device.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/885,177Filed 10 Aug 2022 · continuation
Priority: 14 Mar 2013
Published: US 2022/0393471 A18 Dec 2022
Granted: 4 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H02J 3/32
Arrangements for balancing of the load in networks by storage of energy: using batteries or super capacitors with converting means
H02J 7/00
Circuit arrangements for charging or discharging batteries or for supplying loads from
H02J 7/02
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: for charging batteries from AC mains by converters
H02J 7/50
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: acting upon multiple batteries simultaneously or…

Family

Application13/803,212Parent of this continuation · filed 14 Mar 2013
Application15/383,518Parent of this continuation · filed 19 Dec 2016
US 9,548,619 B2Parent of this continuation · filed 17 Jan 2017
Application16/940,737Parent of this continuation · filed 28 Jul 2020
US 10,778,025 B2Parent of this continuation · filed 15 Sep 2020
US 2022/0393471 A1Pre-grant publication · published 8 Dec 2022
US 11,848,558 B2Related patent
US 12,255,457 B2Related patent
US 2014/0265606 A1Published application
US 2017/0201113 A1Published application
US 2021/0013727 A1Published application
US 12,003,107 B2This patent

From the US filing history. Foreign family members aren’t listed.

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